Exercise may help to safeguard the mind against depression through previously unknown effects on working muscles, according to a new study involving mice.

    Mental health experts have long been aware that even mild, repeated stress can contribute to the development of depression and other mood disorders in animals and people. Scientists have also known that exercise seems to cushion against depression. But precisely how exercise, a physical activity can lessen someone's risk for depression, a mood state, has been mysterious. So for the new study, researchers at the Karolinska Institute in Stockholm studied the brains and behavior of mice in a complicated and novel fashion.

    We can't ask mice if they are feeling cheerful or in low spirits. Instead, researchers have pictured certain behaviors that indicate depression in mice. If animals lose weight, stop seeking out a sugar solution when it's available — because, probably, they no longer experience normal pleasures — or give up trying to escape from the cold-water zone just freeze in place, they are categorized as depressed. And in the new experiment, after five weeks of frequent but low-level stress, such as being lightly shocked, mice displayed exactly those behaviors. They became depressed.

    The scientists could then have tested whether exercise blunts (延缓) the risk of developing depression after stress by having mice run first. But, frankly, from earlier research, they wanted to know how, so they bred pre-exercised mice. A wealth of earlier research by these scientists and others had shown that aerobic exercise, in both mice and people, increases the production within muscles of an enzyme (酶) called PGC-1alpha. The Karolinska scientists suspected that this enzyme somehow creates conditions within the body that protect the brain against depression. Then, the scientists exposed the animals, which without exercising, were in high levels of PGC-1alpha to five weeks of mild stress. The mice responded with slight symptoms of worry. But they did not develop depression. They continued to seek out sugar and fought to get out of the cold-water zone. Their high levels of PGC-1alpha appeared to make them depression-resistant. Finally, to ensure that these findings are relevant to people, the researchers had a group of adult volunteers complete three weeks of frequent endurance training, consisting of 40 to 50 minutes of moderate cycling or jogging. The scientists conducted muscle biopsies (活体检查) before and after the program and found that by the end of the three weeks, the volunteers' muscle cells contained substantially more PGC-1alpha than at the study's start. The finding of these results, in the simplest terms, is that “you reduce the risk of getting depression when you exercise,” said Maria Lindskog, a researcher at the Karolinska Institute.

"Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid."—Albert Einstein

If you have a kid with special needs in the school system, chances are you have come across that saying hanging on a classroom wall. My five-year-old daughter Syona has cerebral palsy (a medical condition affecting someone's control over their movement ) and it means, combined with her communication challenges and sight problems, that standard assessments (and by "standard", I mean the ones used to assess kids with special needs ) aren't always an accurate measure of her abilities.

By now you have probably heard about Chris Ulmer, the 26-year-old teacher in Jacksonville, Florida, who starts his special education class by calling up each student individually to give them much admiration and a high-five (a gesture of greeting or congratulation). I couldn't help but be reminded of Syona's teacher and how she supports each kid in a very similar way. Ulmer recently shared a video of his teaching experience. "I have seen their confidence and self-worth increase rapidly, " he said. All I could think was: How lucky these students are to have such inspirational teachers.

    Syona's teacher has an attitude that can best be summarized in one word: awesome. Her teacher doesn't focus on what can't be done—she focuses on what can be done. Over the past several months, my husband Dilip and I have seen Syona's confidence increase tenfold. She uses words she wouldn't have thought of using before. She recently told me about her classmate's trip to Ecuador and was very proud when I understood her on the first try.

    I actually wonder what the influence would be if we did something similar to what Ulmer does with his students in our home. We've recently started our day by reminding each other of the good qualities we all possess. If we are reminded of our strengths on a regular basis, we will become increasingly confident about progress and success.

    Ulmer's reach as a teacher goes far beyond the walls of his classroom. In fact, he teaches all of us to take a moment and truly appreciate the strengths of an important person in our lives.

A typical school day in the UK starts around 8:30 am. This is often even earlier elsewhere in the world, with students sitting down to their first lesson at 7:30 am in the US. The average teenager ideally needs eight to nine hours' sleep each night, but in reality a lot of teenagers struggle to get this much. A lot of the problems arise because our sleep patterns are not fixed, and they change as we grow.

So a later school start time could help to solve this problem, by ensuring to get their eight plus hours of sleep and react properly to their body's natural rhythms (规律). There has been a general shift over the past 25 years to shorten the school day. This is not at the cost of teaching time (which has remained constant) but at the cost of natural breaks, which has led to reduced lunch time and lesson breaks.

Later start times could help teens' grades and health. This is mainly because it makes the management of children easier. Supervising (监管) hundreds of children “playing” requires effective staffing (人员配备). And there is always the fear that behavior worsens during breaks. So the theory goes that having them in class and strictly supervised must be better.

    But this means that students barely have enough time to absorb what they were doing in maths before suddenly they are thrust into ancient history. And teaching staff also transit from one class to another, with hardly a rest or time to refocus.

    Clearly rethinking the school day could benefit everyone involved. Anyway, it could also lead to better achievement in teenagers and less of a struggle for parents in the mornings. For teachers, it could also mean a less stressful day all around and what could be better than that?

    Ever since I was a kid I had a 6 second rule.That means that if I had something I needed to do but didn't want to, I'd count till 6 and do it anyway.My personal rule was to just never ever break that rule,that at 6,I HAD to get it going.Most of the time I'd use it to get out of bed or get out of the bath.Sometimes I'd also use it to restrict my time playing "ok in 6 seconds I'll stop playing with my dolls."

    As I grew older,I'd use it as a motivation to get it going with my homework,get off messenger,etc.It really worked well,the same rule applied;whatever happens,don't cheat the "rule of 6." Most of the time,I wouldn't even have to count till 6 because I knew it would just mean I have to do it,so I'd just do it anyway.As an adult,I've pretty much conditioned myself to do things by the rule of 6.I've pretty much mastered most usual things in my life but the rule of 6 never fails me when I start something new.Exercising,running,getting cooking,starting reading,it just works for me.

    At the time,when I was 6,6 was my favorite number.So just go ahead and pick a number from 1-10 (although Id suggest 3-10) and try it.The important thing is not just to let yourself down.Like any other trick,it only works if you allow it to.

    Sam Allred suffers from a rare and incurable kidney (肾脏)disease. One day, when his sister was playing a song repeatedly, Sam sang along. His sister thought it was funny so she recorded it and posted the video online. The video—and Sam—became a hit. Only 8 years old at that time, he couldn't have expected the response.

    "(The television show) The Doctors called and wanted me on their show so they paid for me to go to California," says Sam, now 13,"and we got to stay in a hotel where all the movie stars stayed."

    During that visit to California, Angle Allred, Sam's mother, had an idea about Sam writing a children's book. Together, she and Sam wrote Opening Hearts, which tells Sam's experience of living with a chronic (慢性的) illness.

    "I wrote the book to teach people to be kinder to people," Sam says.

    Moreover, Sam wanted to send pillows to sick children staying in hospitals around the country to make their stay more comfortable, an idea that came from a time when he was in the hospital.

    "A few kind boys came in with pillows and they gave me one and it meant a lot to me that someone cared about kids in the hospital," says Sam.

    Angie thought of starting a nonprofit organization to provide a way for people to contribute money to realize Sam's ideas. She named the nonprofit organization Kindness for Kids.

    Since then, Sam has taken pillows to children staying at Providence Hospital in Anchorage.

    Sam's father, Scott Allred, owns a small business that contracts (承包) shipping services with FedEx Ground. He asked the company for help.

    "FedEx Ground learned about Sam's pillow project, "says Erin Truxal, manager of public relations for FedEx Ground. "We thought, 'What a perfect way for us to get involved.'"

    The company provided shipping services for Sam to ship about 5,000 pillows to hospitals.

    Sam wants to send more pillows to all of the children's hospitals in every state. His goal is simple: Kids in the hospital as happy as they were before they got sick.

    If you're feeling overwhelmed by all the features and apps available on smart phones these days and miss the good old days when mobile phones were simple communication tools, you'll probably love Light Phone 2, a stylish " dumb phone" designed to remove time-wasting distractions(使人分心的事物) from your life.

    The original Light mobile phone could only be used to make and take phone calls, but its creators recently decided that in order to improve its usefulness while still keeping users safe from smart phone distractions, it needed a few extra features. They recently announced Light Phone 2 is just as tiny and stylish as the original ones, but also features text messaging functions and an alarm clock.

    Data from company Flurry shows that people in the US spend around five hours a day on their smart phones, while a study from the firm Asurion found that Americans check their phones an average of 80 times per day. Those are some pretty alarming numbers, and to make matters worse, scientists report that too much screen time has a bad effect on our brains, especially those of children.

    Light Phone 2 will never replace your Apple phone, but it can at least help you mitigate the effects of smart phone addiction by allowing you to "go light" every once in a while. You can stay in touch with the important people in your life, but you'll be free from the apps distracting you from the wonders of the colorful world.

    But becoming free of smart phone distractions doesn't come cheap. The Light Phone 2 is expected to be priced at around $400, which is far more expensive than some smart phones. However, a lot of people seem to think the phone and what it promises to do are worth the price, as evidenced by the success of Light's latest crowd funding(众筹) campaign. With 24 days left until deadline, the company has already raised $360,000, blowing past its $250,000 goal.